PMID: 480172Aug 1, 1979Paper

Effect of enzyme-inducing and enzyme-inhibiting agents on drug absorption. II. Influence in proadifen on 3-O-methylglucose transport in rats

Journal of Pharmaceutical Sciences
W R Ravis, S Feldman


Studies utilizing the in vitro everted rat jejunum were performed to investigate the effects of proadifen pretreatment and fasting on active and passive intestinal transfer of 3-O-methylglucose. Animals were pretreated 24 hr prior to the experiments with 100 mg of proadifen/kg ip. With mucosal concentrations of 0.1 mM 3-O-methylglucose and 14C-3-O-methylglucose, transfer to the sugar-free serosal buffer after pretreatment with proadifen was 50% greater than controls after a 24-hr fast and 120% greater than controls after a 48-hr fast. Everted intestinal segments obtained from unfasted control animals showed diminished ability to transfer the sugar derivative, with transfer rates approximately 50% less than those of segments obtained from 24-hr fasted control animals. Wet and dry tissue weights for 24- and 48 hr-fasted groups increased following proadifen pretreatment. The results suggest that proadifen enhances 3-O-methylglucose transport across the rat jejunum and also increases intestinal tissue weight.

Related Concepts

Extracellular Space
Intestinal Absorption
Structure of Intestinal Gland
Proadifen Hydrochloride
Serous Membrane

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